Hering illusion

noun

An optical illusion in which two straight and parallel lines presented in front of a radial (spoked) background appear to be bowed outwards.

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Meanings

nounHering illusion (plural Hering illusions)

plural Hering illusions

  1. An optical illusion in which two straight and parallel lines presented in front of a radial (spoked) background appear to be bowed outwards.

Origin

Discovered by the German physiologist Ewald Hering in 1861.

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Cite this entry
APA

Hering illusion. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Hering%20illusion

MLA

“Hering illusion.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Hering%20illusion. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Hering illusion,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Hering%20illusion.

Source: Hering illusion on Wiktionary, CC BY-SA 4.0.